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| author | Lasse Collin <lasse.collin@tukaani.org> | 2024-02-12 17:09:10 +0200 |
|---|---|---|
| committer | Lasse Collin <lasse.collin@tukaani.org> | 2024-02-14 18:31:16 +0200 |
| commit | e290a72d6dee71faf3a90c9678b2f730083666a7 (patch) | |
| tree | 61d63bfd0484b18fe9e2846e1e9859fbe6c56083 | |
| parent | liblzma: LZMA decoder: Optimize loop comparison. (diff) | |
| download | xz-e290a72d6dee71faf3a90c9678b2f730083666a7.tar.xz | |
liblzma: Clarify a comment.
| -rw-r--r-- | src/liblzma/lzma/lzma_decoder.c | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/src/liblzma/lzma/lzma_decoder.c b/src/liblzma/lzma/lzma_decoder.c index f7323061..6c9cbe22 100644 --- a/src/liblzma/lzma/lzma_decoder.c +++ b/src/liblzma/lzma/lzma_decoder.c @@ -338,9 +338,12 @@ lzma_decode(void *coder_ptr, lzma_dict *restrict dictptr, // Non-resumable Mode (fast) // /////////////////////////////// - // If there is not enough room for another LZMA symbol - // go to Resumable mode. - if (unlikely(!rc_is_fast_allowed() || dict.pos == dict.limit)) + // Go to Resumable mode (1) if there is not enough input to + // safely decode any possible LZMA symbol or (2) if the + // dictionary is full, which may need special checks that + // are only done in the Resumable mode. + if (unlikely(!rc_is_fast_allowed() + || dict.pos == dict.limit)) goto slow; // Decode the first bit from the next LZMA symbol. |